He continued his film career as a director at the beginning of the sound film era with "Die Frau ohne Nerven" (1930), and "Manolescu, der Fürst der Diebe" (1933).
He demonstrated first artistic ambitions when he wrote several chansons for different revues.
He wrote his last screenplays at the beginning of the 30s for "Die Frau ohne Nerven" (1930), "Die Marquise von Pompadour" (1931) and "Das Geheimnis um Johann Orth" (1932).
The director, screenwriter and producer Willi Wolff studied medicine and philosophy. Afterwards he was busy as a dentist in Berlin.
Willi Wolff was married with the actress Ellen Richter with whom he shot numerous movies.